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浏览/检索结果: 共2条，第1-2条 帮助 已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Segmenting overlapping nano-objects in atomic force microscopy image 期刊论文 JOURNAL OF NANOPHOTONICS, 2018, 卷号: 12 作者:  Wang, Qian[1];  Han, Yuexing[2];  Li, Qing[3];  Wang, Bing[4];  Konagaya, Akihiko[5] 收藏  |  浏览/下载：16/0  |  提交时间：2019/04/24 overlapping micro/nano-objects segmentation  noises removing  overlapping nanoparticles  overlapping nano-objects  AFM images processing  automatically analyze nanoparticles   A hybrid median filter for enhancing dim small point targets and its fast implementation (EI CONFERENCE) 会议论文 2011 International Conference on Multimedia and Signal Processing, CMSP 2011, May 14, 2011 - May 15, 2011, Guilin, Guangxi, China Yang Q. 收藏  |  浏览/下载：17/0  |  提交时间：2013/03/25 Weak stars and middle altitude orbit satellites or high altitude orbit satellites are presented as dim point targets in images of astronomical observation. They have low intensity and occupy few pixels in image. In most situations  the background of sky is always ununiform and there exists pulse noises. Thus results in targets submerging in background noises and low signal noise ratio (SNR). Median filter is an effective method for removing pulse noise. But it can blur image after modifying gray of non-noise pixels when image has low SNR. A hybrid median filter algorithm is proposed to process low SNR dim point targets image. The newly proposed method can suppress the pulse noises  also can increase target $SNR$ and does not add extra fake targets. The time complexity of median filter is O(N2)(N is the widow size) and is difficult to implement in hardware. For quasi real time application  a fast implementation of our hybrid median filter is proposed to reduce the time complexity to O(N). Experimental results show that the newly proposed algorithm is superior to ordinary median filter and fast median filter by comparing visual effect and performance. 2011 IEEE.